LAQUAact DO120

LAQUAact DO120 PortableMeters

Handheld Water Quality Meters

In the lab, in the field or anywhere you need it
Designed for use with one hand and with an IP67 waterproof rating and shock-resistant casing, this meter can be used for long periods, even in dark places, making it ideal for field measurements in rivers and lakes.

Segment: Scientific
Division: Water Quality
Base product
Manufacturing Company: HORIBA Advanced Techno Co. Ltd.

Dissolved Oxygen



  • Measures dissolved oxygen (DO) concentration in ppm (mg/L) or % saturation
  • 0.01 mg/L or 0.1% resolution
  • Compensates for sample salinity and temperature and atmospheric pressure 
  • Up to 2 calibration points 
  • Auto log data; Built-in memory can store up to 1000 data
  • Auto-shut off (programmable: 1 to 30 minutes)
  • Auto-Hold / Auto-Stable measurement
  • Built-in electrode holder allows 2 electrodes to be attached on both sides of the meter
  • Large backlit LCD: 52mm x 64mm
  • RS232 for connecting to computer and printer
  • Casing is IP67 waterproof (for 30mins immersion in 1m depth of water) and dustproof
  • Powered by 2 x AAA (LR03) or Ni-MH batteries or power adaptor
  • Packaged in new molded carry case
  • 2 years meter warranty


Meter Kit Available:


 DO120-K Meter Kit 

The appearance of items in the picture are subject to change in each region.

Package Details:

  • LAQUAact DO120 DO/Temp meter, built-in electrode holder, 2 x AAA batteries
  • Instruction manual
  • 9551-20D Galvanic DO probe with integrated temperature sensor, 2m cable
  • Carry case






LAQUAact DO120


DO Range

0.0 to 20.00 mg/L

0.0 to 200.0%

Resolution0.01 mg/L or 0.1%
Accuracy± 0.01 mg/L
Calibration PointsUp to 2
Salinity Compensation0 to 40 ppt
Barometric Pressure CompensationYes
Temperature CompensationYes
DO Probe TypeGalvanic
Temperature Range-30.0 to 130.0°C
Accuracy± 0.4°C
Memory Data1000
Auto Log Data Yes
Real-time ClockYes
Date / Time StampYes
Auto-Shut OffYes (Programmable: 1 to 30 minutes)
Auto-Hold / Auto-StableYes
Electrode StatusOn screen display
Diagnostic MessagesYes
DisplayCustom Backlit LCD
InputsBNC, phono, DC sockets
IP RatingIP67, shock-resistant
Power Requirements2 x AAA (LR03) or Ni-MH rechargeable batteries, or power adaptor
Battery Life>500 hours
Waste Water Treatment and Disposal in Water Waste Management and Remediation Services
Waste Water Treatment and Disposal in Water Waste Management and Remediation Services
Brochures-LAQUAact 100 Series Handheld Meters
Size 1.35 MB
Instruction manuals-Handheld Meters-LAQUAact_DO110_120_Manual
Size 0.56 MB


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